Added Makefile support

Makefile

@@ -0,0 +1,14 @@
+SRCDIRS :=
+empty:=
+space:=$(empty) $(empty)
+
+dir := src
+include $(dir)/module.mk
+
+all: sim
+
+sim_output_location:
+	mkdir -p build/sim/
+
+sim: sim_output_location
+	bsc -u -p $(subst $(space):,:,$(SRCDIRS)) src/ESeries.bsv

shell.nix

@@ -0,0 +1,21 @@
+let
+  nixpkgs = fetchTarball "https://github.com/NixOS/nixpkgs/tarball/nixos-25.05";
+  pkgs = import nixpkgs { config = {}; overlays = []; };
+in
+pkgs.mkShell {
+  # Dependencies that only exist in the build environment
+  nativeBuildInputs = with pkgs; [
+    bluespec
+    clang   # for clang-format
+  ];
+
+  # Dependencies that only exist in the runtime environment
+  buildInputs = with pkgs; [
+  ];
+
+  shellHook =
+    ''
+      # This provides git an email address for commits
+      export EMAIL="john@coolpeople.io"
+    '';
+}

src/Cpu/CSRs/module.mk

@@ -0,0 +1,8 @@
+sp := $(sp).x
+dirstack_$(sp) := $(d)
+d := $(dir)
+
+SRCDIRS+=:$(d)
+
+d := $(dirstack_$(sp))
+sp := $(basename $(sp))

src/Cpu/module.mk

@@ -0,0 +1,11 @@
+sp := $(sp).x
+dirstack_$(sp) := $(d)
+d := $(dir)
+
+SRCDIRS+=:$(d)
+
+dir := $(d)/CSRs
+include $(dir)/module.mk
+
+d := $(dirstack_$(sp))
+sp := $(basename $(sp))

src/Memory/module.mk

@@ -0,0 +1,8 @@
+sp := $(sp).x
+dirstack_$(sp) := $(d)
+d := $(dir)
+
+SRCDIRS+=:$(d)
+
+d := $(dirstack_$(sp))
+sp := $(basename $(sp))

src/Util/module.mk

@@ -0,0 +1,8 @@
+sp := $(sp).x
+dirstack_$(sp) := $(d)
+d := $(dir)
+
+SRCDIRS+=:$(d)
+
+d := $(dirstack_$(sp))
+sp := $(basename $(sp))

src/module.mk

@@ -0,0 +1,17 @@
+sp := $(sp).x
+dirstack_$(sp) := $(d)
+d := $(dir)
+
+SRCDIRS+=:$(d)
+
+dir := $(d)/Cpu
+include $(dir)/module.mk
+
+dir := $(d)/Memory
+include $(dir)/module.mk
+
+dir := $(d)/Util
+include $(dir)/module.mk
+
+d := $(dirstack_$(sp))
+sp := $(basename $(sp))